A man accused of stabbing one teen to death and wounding another one in a 2016 attack at an Abbotsford school is schizophrenic, and his psychosis has worsened in the past two weeks, a psychiatrist said in court Wednesday.

Gabriel Klein is alleged to have stabbed two Grade 9 students at Abbotsford Senior Secondary in November 2016. Letisha Reimer, a 13-year-old student, was killed in the attack, while the other victim survived.